EP1936948A3 - Method for coherent watermark insertion and detection in color halftone images - Google Patents

Method for coherent watermark insertion and detection in color halftone images Download PDF

Info

Publication number
EP1936948A3
EP1936948A3 EP07122709A EP07122709A EP1936948A3 EP 1936948 A3 EP1936948 A3 EP 1936948A3 EP 07122709 A EP07122709 A EP 07122709A EP 07122709 A EP07122709 A EP 07122709A EP 1936948 A3 EP1936948 A3 EP 1936948A3
Authority
EP
European Patent Office
Prior art keywords
image
color
color separation
halftone screen
data corresponding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07122709A
Other languages
German (de)
French (fr)
Other versions
EP1936948A2 (en
Inventor
Gaurav Sharma
Shen-Ge Wang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xerox Corp
Original Assignee
Xerox Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xerox Corp filed Critical Xerox Corp
Publication of EP1936948A2 publication Critical patent/EP1936948A2/en
Publication of EP1936948A3 publication Critical patent/EP1936948A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32144—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32144—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
    • H04N1/32149—Methods relating to embedding, encoding, decoding, detection or retrieval operations
    • H04N1/32203—Spatial or amplitude domain methods
    • H04N1/32256—Spatial or amplitude domain methods in halftone data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32144—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
    • H04N1/32149—Methods relating to embedding, encoding, decoding, detection or retrieval operations
    • H04N1/32309—Methods relating to embedding, encoding, decoding, detection or retrieval operations in colour image data

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
  • Editing Of Facsimile Originals (AREA)
  • Record Information Processing For Printing (AREA)
  • Color, Gradation (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

A method for generating an authenticable color image, the color image including a plurality of color separations, wherein an authentication image inserted in the multicolor image is not readily visually perceptible, includes halftoning image data corresponding to a first color separation using a single halftone screen, wherein the halftone screen includes means for generating an authentication image in a color image; and halftoning image data corresponding to a second color separation using the halftone screen and dot placement information for the image data corresponding to the first color separation to form a multicolor image; wherein halftoning of image data corresponding to the second color separation includes placing dots for the second color separation in thresholds of the halftone screen relative to those thresholds occupied by the first color separation in the halftone screen in accordance with a predetermined relationship.
EP07122709A 2006-12-22 2007-12-10 Method for coherent watermark insertion and detection in color halftone images Withdrawn EP1936948A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/615,407 US7952767B2 (en) 2006-12-22 2006-12-22 Method for coherent watermark insertion and detection in color halftone images

Publications (2)

Publication Number Publication Date
EP1936948A2 EP1936948A2 (en) 2008-06-25
EP1936948A3 true EP1936948A3 (en) 2009-04-29

Family

ID=39271591

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07122709A Withdrawn EP1936948A3 (en) 2006-12-22 2007-12-10 Method for coherent watermark insertion and detection in color halftone images

Country Status (3)

Country Link
US (1) US7952767B2 (en)
EP (1) EP1936948A3 (en)
JP (1) JP4874221B2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8134741B2 (en) * 2007-03-28 2012-03-13 Xerox Corporation System and method for controlling consistent color quality
US9277091B2 (en) 2007-05-22 2016-03-01 Xerox Corporation Embedding information in paper forms
US7889390B2 (en) * 2008-02-25 2011-02-15 Xerox Corporation System and method for the generation of correlation-based digital watermarks using uniform-rosette color halftoning
US8385592B2 (en) * 2009-02-04 2013-02-26 Quicksilver Software, Inc. Digital watermarking system and method
US8284987B2 (en) * 2010-09-17 2012-10-09 Hewlett-Packard Development Company, L.P. Payload recovery systems and methods
CN106296593B (en) * 2015-05-29 2021-10-29 腾讯科技（深圳）有限公司 Image restoration method and device
JP6529168B2 (en) * 2015-08-06 2019-06-12 株式会社ジー・プリンテック Retransfer printing apparatus, printer driver program, printing system, retransfer printing method, and card manufacturing method
WO2021154267A1 (en) * 2020-01-30 2021-08-05 Hewlett-Packard Development Company, L.P. Halftone screens encoding signatures
CN112712455A (en) * 2021-03-03 2021-04-27 桂林电子科技大学 Color image watermarking device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5673121A (en) * 1996-06-17 1997-09-30 Xerox Corporation Stochastic halftoning screening method
US5790703A (en) * 1997-01-21 1998-08-04 Xerox Corporation Digital watermarking using conjugate halftone screens
US6636616B1 (en) * 1999-11-30 2003-10-21 Xerox Corporation Method and apparatus for digital watermarking using error diffusion
US6721063B1 (en) * 2000-01-19 2004-04-13 Xerox Corporation Image rendering system and method using sum and difference error diffusion with arbitrary and redundant colors
US6731409B2 (en) * 2001-01-31 2004-05-04 Xerox Corporation System and method for generating color digital watermarks using conjugate halftone screens
US6844941B1 (en) * 2000-06-23 2005-01-18 Xerox Corporation Color halftoning using a single successive-filling halftone screen

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5543935A (en) * 1994-11-18 1996-08-06 Xerox Corporation Halftoning method using space filling curves
US6072591A (en) * 1997-06-30 2000-06-06 Xerox Corporation Sum and difference error diffusion
JP3889140B2 (en) * 1998-01-05 2007-03-07 株式会社東芝 Image forming apparatus
US6263086B1 (en) * 1998-04-15 2001-07-17 Xerox Corporation Automatic detection and retrieval of embedded invisible digital watermarks from halftone images
US6252971B1 (en) * 1998-04-29 2001-06-26 Xerox Corporation Digital watermarking using phase-shifted stoclustic screens
US6867884B1 (en) * 2000-07-07 2005-03-15 Kodak Polychrome Graphics, Llc Halftone dot placement for multi-color images
US7528971B2 (en) * 2001-05-07 2009-05-05 Xerox Corporation Method for color halftoning when utilizing redundant color inks
KR100453683B1 (en) * 2002-03-15 2004-10-20 한국전자통신연구원 Method for inserting and detecting a spatial domain blind watermarks with sample expansion
US20070002410A1 (en) * 2005-06-30 2007-01-04 Majewicz Peter I Hybrid halftoning

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5673121A (en) * 1996-06-17 1997-09-30 Xerox Corporation Stochastic halftoning screening method
US5790703A (en) * 1997-01-21 1998-08-04 Xerox Corporation Digital watermarking using conjugate halftone screens
US6636616B1 (en) * 1999-11-30 2003-10-21 Xerox Corporation Method and apparatus for digital watermarking using error diffusion
US6721063B1 (en) * 2000-01-19 2004-04-13 Xerox Corporation Image rendering system and method using sum and difference error diffusion with arbitrary and redundant colors
US6844941B1 (en) * 2000-06-23 2005-01-18 Xerox Corporation Color halftoning using a single successive-filling halftone screen
US6731409B2 (en) * 2001-01-31 2004-05-04 Xerox Corporation System and method for generating color digital watermarks using conjugate halftone screens

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MING SUN FU ET AL: "Watermarking technique for color halftone images", ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, 2004. PROCEEDINGS. (ICASSP ' 04). IEEE INTERNATIONAL CONFERENCE ON MONTREAL, QUEBEC, CANADA 17-21 MAY 2004, PISCATAWAY, NJ, USA,IEEE, vol. 3, 17 May 2004 (2004-05-17), pages 381 - 384, XP010718206, ISBN: 978-0-7803-8484-2 *

Also Published As

Publication number Publication date
EP1936948A2 (en) 2008-06-25
JP4874221B2 (en) 2012-02-15
US20080151311A1 (en) 2008-06-26
US7952767B2 (en) 2011-05-31
JP2008160841A (en) 2008-07-10

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